Liquid agitating and dispensing apparatus



Oct. 24, 1950 R. R. HULL 2,526,949

LIQUID AGITATING AND DISPENSING APPARATUS Filed Jan. 15, 194e 4sheets-sheet 1 Oct. 24, 1950 R. R. HULL 2,526,949

LIQUID AGITATING AND DISPENSINGl APPARATUS Filed Jan. 15, 1946 4Sheets-Sheet 2 IN VEN TOR.

Oct. 24, 1950 R. R. HULL 2,526,949

LIQUID AGITATING AND DISPENSING APPARATUS Filed.Jan. l5, 1946 4Sheets-Sheet 5 Oct. 24, 1950 R, R, HULL 2,526,949

LIQUID AGITATING AND DlsPENsING APPARATUS Filed Jan. 15, 194e 4sheets-sheet 4.

s A 88 los |20 l l2! IN VEN TOR.

Patented Oct. 24, 1950 LIQUID AGITATIN G ANDDISPENSING APPARATUS Y,

Robert R. Hull, Covina, Calif., assigner, by mesne assignments, toCalifornia Fruit Growers Exchange, Los Angeles, Calif., a corporationoi' California Application January 15, 1946, Serial N0. 641,267

This invention relates to liquid dispensing apparatus; and it relatesmore particularly to apparatus for dispensing a beverage liquid, such'as "a fruit or vegetable juice, characterized by the provision of powerdriven means capable of functioning both to agitate a supply of saidbeverage liquid tov a desired extent, more especially continuously, andalso, upon appropriate change of driving connection to the source ofpower, to remove a measured quantity of liquid from said supply intodispensing position.

In dispensing certain kinds of beverage liquids by measuring out anddelivering successive portions from a body thereof contained inthe'supply reservoir, it is desirable in some cases to main- -tain thebody of liquid in such supply reservoir tive, in conjunction withrefrigeration, to maintain certain juices, notably citrus 'fruit juice,in good potable condition much longerthan when refrigeration alone isrelied upon. Whether this is due to the aeration resulting from suchagitation, or to some other cause, it is an established fact that if arefrigerated body of orange juiceffo'r example, vis vmaintained properlyagitated, the juice will keep sometimes as much as a week or ten dayslonger than it'will when left atrest. .r

An important'object of the presentinvention 'is to providefa relativelysimple apparatus especially adapted for dispensing beverage liquids ofthe indicated type, which includes means dependably effective in itsoperation to maintain a supply body of such liquid adequately agitatedand, upon suitable modification of its agitating action, to deliversuccessive measured -portions from said body of liquid to a place ofdischarge.

A further important object of the invention is to provide dispensingapparatus of the general lcharacter stated, in which contact of bearingscarrying moving parts` with the beverage liquid is eliminated or reduced'Y to a minimum, and which can be kept in sanitary vcondition and easilyrecharged with a fresh supply of the vbeverage liquid whenevernecessary.

With these and other objects in view, which will become apparent asthedescription proceeds, the invention comprises the. novel features 19Claims. (Cl. 222-358) of construction and the combinationsv lthereofwhich Will rst be described in connection'rrwith a practical lform ofapparatus constituting an illustrative embodiment of the inventiveprinciples involved, and will then be morefparticularly pointed out inthe appended claimsg" Dispensing apparatus constructed in accordancevwith the principles of the invention em'- ploys one and the same meansoperable both to perform the function of agitating the body of beverageliquid contained in the supplyreservoir of the apparatusgand and also,upon suitable supplemental or modied actuation which may or may not becoin-controlled, to convey from said reservoira measured vquantity ofsaid liquid for dispensing delivery to a point outside the reservoir.Most desirably said means takes the form of a dipper-like device havinga hollow stem so mounted for oscillatory movement',*and so connected toappropriate driving provision, that the dipper, when'the apparatusis'no't'dispensing, depends intol the supply reservoir or tank andv isswung back and forth close to the bottom thereof, most desirably througha predetermined and positively controlled agitating' arc of swing,either continuously or to such "cire tent intermittently as may benecessary to ensure agitation of the body of beverage liquid in thedesired degree. When a measured portion of liquid is to be dispensed,the action of said driving provision is modied in any suitable manner tocause the apparatus lautomatically to go through a dispensing cycle,whereinrthe dipper is caused to swing upwardly beyondits normallylimiting position at one end of'its'f'aeitating arc to an elevation suchthat the measured portion of liquid carried up with it drains from thedipper into and through its hollow stem for delivery outside thereservoir; the dipper being thereupon swung back into the reservoir andcontinuing to operate in its normal agitating phase until again actuatedto go through another dispensing cycle. f

Other novel features Vand advantages of the invention will be apparentfrom the"`detailed description hereinafter of one typical practicalembodiment of the invention shown'in the'afccompanying drawings, whereinY Y' e Fig. 1 is a iront elevation of the upper portion of the completeapparatus unit, the ap paratus cabinet or housing being shortenedvertically and partly broken awayv to show Daft/S immediately behind thesame, and the dipper beine indicated in its highest or dispensingPosition; i 1 r Fig. 2 is a top plan of the unit shown in Fig. l, withthe cabinet cover and beverage tank cover removed;

Fig. 3 is an end elevation, partly in section, viewing the apparatus ofFig. 1 from the right and with the cabinet partly broken away, but withthe dipper swung down into its lowest position;

Fig. 4 is a plan, on an enlarged scale, of the. f

power and variable transmission unit forV operating the agitating andmeasuringA dipperi device, looking in the direction of the arrows 4--4inFig. 1;

Fig. 5 is a front end elevationcorresponding. to Fig. 4, but showingcertain'parts` in slightly later operating phase;

Fig. 6 is a front elevation of the gear constituting the driven memberof a clutch device included in the transmission unit;

Fig. '7 is a rear elevation of the rotary cam disk for actuatingthe-clutch-shifting mechanism;

Fig. 8 is an elevation of part, of the clutchshifting mechanism, showingthe mounting of the cam follower in the clutch-actuating frame orcrosshead;

Fig. 9 is a side elevation, partly in central longitudinal section,showing on an enlarged scale further details of. how the rotary mountingdisk and driving sprocket are assembled and supported for rotation;

Figs. 10 and 11 are, respectively, a rear elevation and a side ofV saidmounting disk showing a portion of the dipper-mounting means securedthereto;

Fig. 12 is a detail perspective showing the cooperating portionof saiddipper-mounting means,l with the dipper stem secured thereto.

In the beverage dispensing machineillustrated in the drawings, the novelcombination of dispensing parts and operating mechanism with whichy thepresent invention is primarily concerned is housed as a unit within acabinet indicated generally at 20. This unit, with its cabinet, is inturn mounted, at a level convenient for beverage dispensing, upon asupporting framework base 2l housed within a cabinet 22. As shown inFig. 1 more particularly, cabinets 2U and 22- may desirably be sodesigned and proportioned that they appear, externally, to constitutesections of a single cabinet or housing within which are enclosed notonly the main dispensing unit above mentioned, but also any necessaryaccessories such, for example, as the motor, compressor and condenser ofa conventional type of refrigerating unit, indicated. generally at 23,located in the base of the lower section of the combined cabinet. Thespace within the upper section 2D of Vthe combined cabinet or housing,is divided into two unequal portions, front and rear, by a verticallydisposed fianged plate 24 which extends the full height of the chamberparallel tothe front and rear walls of the cabinet between the oppositeside or end walls thereof, being secured to said end walls and to thecabinet bottom in any suitable manner, as by welding. This verticalplate is positioned relatively close to the front wall of the cabinet.Besides thus serving as a partition wall, said plate 24 provides meanson which to mount certain apparatus parts and operating mechanism, aswill appear hereinafter. For a purpose that will also presently appear,the upper part of the upper cabinet section extends forward to providean overhanging portion 26a. The cabinet has a double-walled cover 25,hinged` as 4 indicated at 26 along the upper edge of its rear wall 21.

Within the much larger space to the rear of mounting plate 24 is thecooling or refrigerating compartment whose side and bottom walls 28 arecovered. with a layer of heat-insulating material 29, with which thespace between the double walls of cover is also packed. Supported on oradjacent the bottom of the cooling compartment is sealed refrigerationpad 30 containing refrigerant expansion coils (not shown) connected bysupply and return pipes 3|, 32, to the aforesaid refrigeration unit inthe lower cabinet 22` Nesting within the cooling compartment is thebeverageY liquid supply tank 33, supported by its outwardly projectingperipheral rim 34 upon horizontal supporting ledges 35 provided on theinner surface of the front and back Walls of the cooling compartment asubstantial distance below the top of the cabinet. The supply tank isthus supported with its'walls and bottom spaced away from the walls andbottom of the cooling compartment. The supply tank is provided with aremovable unitary cover comprising a flat main portion 36 and a portion31 at the front which extends upwardly to provide a housed space withinwhich the dipper device may swing upwardly into dispensing position, aswill appear more fully hereinafter. The cover unit 36-31 has a dependingperipheral flange 38 fitting snugly within the supply tank rim. Thesupply tank is provided interiorly with hand grips 39 whereby, after thehinged cabinetV cover 25 has been swung back and cover unit 36--31removed through the open top of the cooling compartment, the supply tankmay then also be lifted out. The front and rear walls of the supplytank, as well as one side or end wall', are plane; while the oppositeside wall 40 and that portion 4| of the bottom immediately adjacent thefront wall are most desirably cylindrically contoured. Saidportion 4l istherefore depressed, forming a dipper trough or well vertically belowthe axis and in the plane of dipper swing, and lower than the fiatportion 42 of the tank bottom to the rear, which is sloped gentlyforward toward the well to cause residual liquid to drain thereinto.That part of the cooling compartment bottom which underlies curved endwall 4Q of the supply tank is sloped to conform roughly therewith, asindicated at 40a.

A dipper device, comprising dipper 43 andv its unitary hollow stem 44rigid therewith, depends into supply tank 33, at a location closelyadjacent the front wall thereof, from supporting means permittingylimited rotational or swinging movement of the dipper device about ahorizontal axis perpendicular to the mounting plate 24. The arrangementis such that the dipper device can be swung back and forth to stir thecontents of the juice tank, and can also be swung upwardly to elevatesaid dipper high enough to cause liquid contained therein to flowthrough its hollow stem 44 and outwardly through the constantlysubstantially horizontal portion 44a thereof to a convenient exteriorpoint of dispensing delivery. At its delivery end, the hollow dipperstem is provided'with an angular discharge spout 44h removably securedthereto as by the bayonet pin and slot connection shown at 44e.Provision is also made for maintaining adequate thermal insulation ofthe beverage supply tank at this locality despite the necessaryaperturing of its front wall to permit passage of the dipper stemtherethrough at some distance from the horizontal axis aforesaid. Onepractical form which such arrangement may take, as well as typical meansfor producing the stated swinging m'ovement of the dipper device in themanner and to the extent desired, are shown in the drawings 'and willnow be described in detail.

In the upper, overhanging portion a of the cabinet space in front ofplate 24, a tube providing a sleeve-bearing support is so mounted thatits axis coincides with the horizontal axis,

- perpendicular to plate 24, about which the dipper device is to haverotational movement. Rigidly secured to said tube 45 adjacent itsopposite ends, as by welding, are mounting fins or iianges 45a, sospaced apart as to fit closely between and "abut the adjacent faces ofbracket 46 secured to and offset from mounting plate 24, and the lowerof two front tie strips 41 at the front of the cabinet overhang 20a,when the tube 45 is seated in aligned recesses with which the upperedges of these members are respectively provided. Bracket 46 and tiestrips 41, together with vertical transverse flanged bracing plates 48extending between said strips and plate 24 and secured to both, bracket46 also being secured to said plates as well as to plate 24, cooperateto provide a stiiT supporting framework for holding said bearing supporttube 45 rigidly in proper position. The respective tube flanges are rmlysecured to bracket 46 and lower tie strip 41 by machine screws 45Dpassing through apertures 45e in the fins, most desirably elongated toform slots, and cooperating tapped holes in the bracket and tie strip.This arrangement enables any necessary ne adjustment of the alignment ofbearing support tube 45.

Press-fitted into bearing support 45 is sleeve bearing 48a, within whichturns shaft 49 carrying a sprocket 50, whose hub 5| isv fixed thereto asby 'set screw 52, and one face of which is recessed as indicated at 53to iit snugly over the end of the sleeve'bearing. This arrangement, to-

`gether with retaining flange 54 secured to the opposite end of theshaft by machine screw 55 which is accessible for adjustment ordisassemblingY upon removal of closure plug 56 of the bearing supporttube, prevents longitudinal movement of the shaft within said bearing:vOn the opposite face of the sprocket hub, which is flush with theadjacent end of shaft 49, is mounted for coaxial rotation therewith,within peripherally sealed circular opening 51, which extends throughmounting plate or partition 24 and also through rthe front wall ofrefrigerating compartment and the interposed heat-insulating material29, a circular disk 58 which, in turn, carries the dipper deviceaforesaid. This disk, which is most desirably composed of a syntheticplastic or other Vadequately strong and tough heat-insulating mavsaiddisk, as indicated at 33a and 33h. N otch or recess 6|, which extendsradially inward from the periphery of disk 58 a distance somewhatv,greater than rthe external diameter of the hori- :z'ontal portion 44aof the dipper stem, and the concave semicylindrical base Wall Alila Aofwhich hasa radius of curvature slightly greater than half' saiddiameter, is adapted to receive said portion 44a of the dipper stem'.Seated in rectangular recess 62 on the rear face of said disk andsecured thereto by machine screws 63 which extend through the disk fromits front face and have their heads countersunk therein, is the base 64of a hanger hook which includes a rearwardly projecting outer portion 65that is rigid with said base and is broadened to provide circularlycurved lateral retaining flanges 66, 66a, which are concentric With theaforesaid cylindrical base Wall 6|a, and which overhang and are spacedfrom the disk surface as shown (Figs. 10 and 11).

Cooperating with this hanger hook is a dipper bracket and claw memberindicated generally at 61 (Fig. 12), which has a flat catch portion 68slidably seating against portion 65 of the hanger hook, with depending,inwardly directed circularly arcuate lateral flanges B9, 69a, whichslidably fit around and under the cooperating arcuate flanges 66, 66a,of the hanger hook. Spot-welded or otherwise rigidly secured to saidmember 68 is plate 1U which has its end portions bentat right angles toprovide two rearwardly extending flat bracket arms 1|, 12. The hollowstem of the swingable dipper device is attached to the outer ends ofsaid bracket arms, said ends being arcuately formed to fit closely thecontouring of the dipper stem at the points 13, 14, where theyrespectively engage the stem and are `firmly united therewith as bywelding; the claw anges 69, 69a being coaxial with the forwardlyextending, substantially horizontal portion 44a of the dipper stem,which is adapted to seat loosely in the s-emicylindrical inner or baseportion of recess or notch 6 I. The parts are so proportioned anddisposed relative to one another that, when the parts are properlyassembled with portion 44a of the dipper stem so seated, itslongitudinal axis coincides with that of said cylindrical base portion;and said claw anges 69, 69a, are interengaged with flanges 66, 66a, ofthe hanger hook.

In order thus properly to assemble the dipper device with the rotarymounting and insulating disk 58, the horizontal portion 44a, with thedeendwise through notch or recess 6| in the disk periphery until portion69 of the bracket and claw `member carried by the dipper stem is closedto the rear face of said disk. Then, with portion 44a of the dipper stemseated in the base of recess 6|, and lin such angular position that,viewing the parts as seen in Fig. 10, the circularly curved claw ilanges69, 66a, are somewhat above`hook flanges |35, 66a, and are circularlyaligned therewith in coplanar relation, the desired slidinginterengagement is eiTected by turning the dipper and mounting clawassemblage counterclockwise about the axis of said portion 44a of thedipper stem, Suitable stop means, such as pin 15, arrests this turningmovement when the claw member fully overlies the supporting hook member.At the same time, reverse or clockwise turning movement of saidassemblage is prevented by means of a latch device comprising curvedspring clip 16 secured at one end 1l to claw flange 69, as by welding,and provided at its free opposite end with a latch pin 18 which worksthrough a hole in said flange and is pressed radially inward by theaction yof the spring clip. Just as the claw member isy about to strikeand be arrested by stop pin 15, the latch pin registers with and isforced into `a recess-19 provided in the adjacent'face ually operablewithout deposit of a coin.

ofthe cooperatingnange' of the hook member. thus holding the assembledparts rmly against accidental disengagement. Yet, when it is desired toremove the dipper device, the latch pin is readily moved out of recess19 by lifting that end of the spring clip; whereupon turning the dipperand mounting claw assemblage clockwise disengages it from the mountinghook and permits removal of the dipper device.

It will be seen that the described arrangement provides a. firm and`rigid mounting of the dipper device on the disk 58, which at the sametime can be readily disassembled, when desired, for cleaning or otherpurposes. Moreover, the offcenter mounting of the clipper device on thedisk in the manner described entirely avoids the disadvantages andmechanical dfculties that would be involved in having the hollowdipper'stem pass through the disk axially.

Suitable driving means are provided for continuously oscillating theagitating and dispensing clipper device, mounted as described, at apredetermined rate and through a predetermined angular distance, usuallyan equal distance (e. g. each side of the vertical or central dipperposition; whereby to maintain the beverage liquid, e. g. orange juice,properly agitated. Associated with such driving means is provisionwhereby, while normally operating in this manner, the drivingconnections may be altered, either manually or by coin-actuatedmechanism, to interrupt the normal agitating action of the dipper andcause the dipper automatically to go through a dispensing or vendingcycle wherein it is elevated to dispensing position as shown in dottedlines in Fig. l, and then returned to its lowered position forresumption of its oscillatory agitating movement. 'I his latter thencontinues indefinitely untl once more interrupted by initiation ofanother dispensing cycle. While such driving means may take widelydiffering specific forms within the scope of the invention, thearrangement here illustrated' and now to be described works well and hascertain advantages of considerable importance from a practicalstandpoint.

In the specific form here illustrated by way of example, the inventionis embodied in apparatus more particularly suitable for use in locationswhere, as at a soda fountain, an operator is in attendance to servepurchasers with measured portions of the beverage dispensed by theapparatus. Therefore the means here shown for changing the functioningof the dipper device from its normal operation of stirring the beverageto that of dispensing a measured portion of it are man- In general, suchmeans comprises clutch mechanism shiftable to connect a normally idledispensing or vending cycle drive shaft temporarily to a source of powerwhich also actuates an agitating drive shaft, such connection beingmaintained until a predetermined cycle of dispensing movements has beencompleted, whereupon the connection is automatically broken.

Located within cabinet 20, therefore, in the space below the slopedportion 40a of the brine tank bottom, is an electric motor 80 of thegear head type, connected by flexible coupling 8| to main driving shaft82 journaled in suitable bearings on the frame of the transmission gearbox or case 83. Shaft 82 drives similarly journaled agitatingtransmission shaft 84 continuously through meshing gears 85, 86, fastwith the respective shafts. In the arrangement here shown,

drive shaft 82 revolves counter-clockwise, as

8 viewed in Fig. 5. Shaft 84 extends through the front wall of the gearcase, and to its, projecting end is xed crank disk 81 having crank pin88. Gear 89, loose on shaft 84 and provided with a hole or holes in itsweb, constitutes the driven member of a pin clutch, of which thetwo-part driving member consists of driving collar 9| fixed to saidshaft as by set screw 92, and pin-carrying collar 93 longitudinallyshiftable on said shaft to move clutch pin 94, which is rigidly mountedon said collar 93, through passage 95 in collar 9| t0- ward or away fromgear 89, and the holes 90 therein` any of which said piny is adapted toenter for the purpose of driving said gear. Spring 96, coiledaround-shaft 84 and compressed between xed collar9| and longitudinallymovable collar 93,

tends to move the latter away from collar 9| into a limiting positionsuch that the clutch pin 94 is just disengaged from gear 89. Thislimiting position, which is constantly maintained except during adispensing cycle, is determined by abutment of stop ring 9'1, seated ina circumferential groove at the free end of a shorter pin 98 secured tocollar 93, with shoulder 99 in passage |00 through collar 9| in whichthis pin works.

Also journaled in the gear case frame and projecting through the frontwall of said case is dispensing or vending cycle shaft |0|, carryingfast therewith gear |02 which meshes with gear 89 and is desirably ofgreater diameter.v Also fast with shaft |0| is a circular disk |03having a rearwardly extending peripheral flange |04, whose rear face isformed as a cam track |04a against which bears roller cam-follower |05trunnioned in and intermediate the ends of a double cross bar or frame|01, as indicated at |05; the assemblage constituting a clutch-shiftinglever device fulcrumed on the cam ange. This lever device is connectedat its ends to shafts 84 and |0| in such manner as not to interfere withrotation of said shafts, and as to be movable longitudinally along thesame. In the particular construction here shown, one end of said leverdevice is pivotally secured at |08 to `a squared collar |09 which isloose and slidable on shaft |0|. Its opposite end is similarly pivotedat ||0 to squared collar which is loose and slidable on shaft 84. Coiledcompression spring ||2 on shaft |0| is confined between hub ||3 of gear|02 and said collar |09, and at all times acts upon the lever deviceaforesaid to press collar |09 against the hub |03a of cam disk |03,except as hereinafter noted. Furthermore, with the clutch fully engagedas shown in Fig. 4, which depicts the mechanism as being in dispensingphase and as having nearly completed a dispensing cycle, the camfollower |05 is riding on the highest part ||5 of the cam track |04a.Also, because spring ||2 is stronger or stiffer than clutch-disengagingspring 96, the pressure of collar I against collar 93 holds the clutchengaged, against the opposing thrust of spring 96. Upon slight furtherrotation of the cam, counterclockwise as seen in Fig. 5, the dispensingcycle is completed and follower |05 is pressed into the relatively deepdepression H4 in the cam track, causing immediate disengagement of theclutch and cessation of all movement on the part of shaft |0| and thecam disk fixed thereto. Operation in agitating phase is thus restoredand continues until another dispensing cycle is started.

In order to start another dispensing cycle, it is necessary to rotatethe cam disk farther in the same direction through a sufficient angle tocause follower I 05 to ride up out ofdepression I I4 on to the high partH5 of the cam track, thus elevating the fulcrum of the clutch-shiftingframe |'I. This forces rearwardly the collar |09 and that end of theframe which is pivoted thereto, thereby increasing the compression ofspring H2. If at this instant the clutch pin 94 and one of the clutchholes 90 in gear 09 happen to be in alignment, the opposite end of theframe, with collar I|I pivoted thereto, will be simultaneouslyl movedrearwardly a -distance suicient to cause engagement of the clutch; thethrust of the stronger spring H2 overbalancing that of the weaker spring96 asaforesaid. However, if the rotating composite clutch member 93-95happens, at the instant the` follower rides up out of the depression H4,not to be in such angular position that the clutch pin 91|`V and one ofclutch holes 90 in the then stationary. gear 89 are properly aligned,the clutch pin;is in that event simply thrust `into abutment withthe webof gear 89 and bears thereon until, upon suicient further rotation ofthe clutch member 93-95, such proper alignmentoccurs and the clutchparts engage. In the specific construction here shown, where the gear 89ris provided with a plurality-of holesinto any of which the clutch pinmay enter, the delay in clutch engagement :clue to initial non-alignmentof pin and hole is only momentary. During-such delay, collar |09 onshaft |0| is lifted somewhatout of `contact with the hub of cam disk |03against the thrust of spring I I2, but upon clutch engagement is againimmediately seated on the hub by said thrust. 'Collars |09 and II I aresuiliciently loose on their respective shafts to permit the describedmovements to takefplace.' y

The clutch being engaged, dispensing shaft I0 I is driven, together withdispensing crank H6v xedly secured to the forward end ofsaid shaft whichprojects through the front wall Yof thei transmission case. Whenthedispensing shaft andthe camidisk xed thereto' havecoxnpletedsubstantially one'revolution, follower |05,y drops back into recess `II4 in the cam track, causingg disengagement of the clutch andrestoration oi?- the parts to the agitating phase-position. i

Suitable means are provided-for turning cam disk |03 into properstarting position, wherein` follower |05 is elevated to causelengagementof the described clutch mechanismV and thus initiate the dispensingcycle. In the arrangement here shown, .a tripping device (forthispurpose comprises a bar Hl which is'xedly Ysecured near one endtopivot shaft H8 jo'urnaledv inthe transmission case frame and extendingthroughl the front wall of said case and the front wall of the cabinet;an operating lever handle IISXedto such externally projecting extension;and a pendant latch hook or catch |20, pivoted to said,

bar near its opposite end to swing freely there# from. When dispensingshaft |0I randy the parts associatedftherewith are at rest, said hooklis maintained by gravity in latching'con'tact with a detent', such aspeg |2I, carried onthe--front face of cam disk |03.vr For-the sake of-convenience' in explanation, the hook and detent are shown in Fig. 5 asbeing in thisposition, in which the cam disk has turned counterclockwiseslight- -ly'.farth`erth'anv in the position shown'in Fig.- l-, sothat-follower |05` rests in depression y|`|4 and the clutch isdisengaged.

`When the parts are thus positioned, downward pressure on .the operatinglever handle H9 causes the hook to be lifted'to engage peg I2| and ad-Vance the'cam disk counterclockwise through small angle just suiicientto elevate follower |05 and engage the clutch to initiate the dispensingcycle, as above described. Upward movement of tripping or latch bar v|I'I is limited by suitable stop means to an amount just suicient toaccomplish this result. Upon release of handle H9, thelatch bar isreturned to its original position by gravity, this return movement beingexpedited by the downward pull of a coil spring |22, if desired, ashere-shown.

rvWhen, due to yinitial non-alignment of the clutch pin and a receivinghole in gear 89, completion of clutch engagementismomentarilydelayed,:pushing down the operating handle H9 may besaid to fcock thedispensing cycle mechanism;so that when'the proper alignment does occur,the somewhat increased compression of spring; II2 by reason of thetemporary lifting of collar I09'from itsnormal seat against hub |03a ofthe cam disk, enables that spring to complete more expeditiously itsslightly delayed action in perfecting' clutch engagement.

lIn order that, under the conditionsA just described,'the bearing of theclutch pin against the gear webmay not vcause more or less premature-drifting movement of gear 89 and the train ofdispensing mechanismarranged to be driven thereby, :prior to positive driving engagement ofthe clutch parts; itis desirable to provide a sha1- low recess or notchI22,ain the cam track, into which the :follower |05 drops'immediatelyafter riding out of the deep recess H4; Recess |22a is soshallo'wthatthe elevation of followerl |05 is still-Campleto accomplish4thedesired engaging movement of,v the clutchl parts for rinitiating thedispensing-cycle; but it is deep enough to provide a detent effective toprevent the aforesaid driftingfI movement'fan'd ythereby ensurepositive` start cfzsaid cycle at the samer-definitely established pointin 'each instance. Since thecam track is ofuniform height except for thesaid depressions or recesses H4L and |22a., positive clutch engagementis maintained throughout the further counterclockwise movement of thecam disk through's'omewhat less than 360, which is terminated bydropping'of the follower |05 into deep recess H4 andjconsequentdisengagement of the driving clutch mechanism.

Just before this return of the dispensing mechanism parts to theirnormal or inactive position is completed, peg I2I strikes the tail |23'of the latch hook, swings the hook backward about its pivot, and ridesover 'its nose |24. The hook then swings back freely into latchingposition as the cam disk comes to rest, in which position the hookisready to 4engagethe peg` and re-set the cam for. Aanother vdispensingcycle, vwhen handle I 9 is againdepressed. L @Referring now :to Figs.1-3 more particularly,

a length of roller. chain |25 trained about sprocket 50 has one endattachedl to crank pin 88'of crank 8l on the continuously'drivenagitator shaft 84, and the other end to acoiled'spring |26 which, inturn,V is anchored as at |2'I to plate 24'or other'convenient stationarypart of 'the apparatus. At some suitable point |28, intermediate thesprocket and crank -pin 88, another length |29 of roller chain has oneend fastened vto chain |25; while its'other endV is secured tov crankpin I 30 of crank I I6 on the normally 'idle dispensing shaft |0|. Therespective-throws of said cranks 81 and vH6, as wellfas the respectivelengths of chains '|25 and |29; are all'so proportioned and correlatedto each other, and the point of attachment atea-949 of chain '|29 tochain 25 is 'so chosen, that whatever 'may be the angular position ofeither crank, spring I 26 is always under greater or less tension,tending to turn sprocket 50 clockwise as viewed in Fig. 1. Hence thespring at all times tends to draw the chain over sprocket 50 and therebyto produce angular movement of the dipper assembly in a directionopposite to that which can be produced periodically by the outward throwof either ofthe two cranks. Thus, at all times during operation of themachine in the normal agi'tating (non-dispensing) phase or cycle, eachoutward throw of crank 8'! on the continuously revolving agitator shaft84 (i.e. in a direction away from sprocket 50) causes sprocket 5D toturn counterclockwise against the pull of spring |26 until, ait theouter dead-center position, corresponding to completion of the outwardthrow of the crank, the dipper has been swung to thepositioiconstituting the predetermined end of its agi'tating swing inthat direction (toward the right lin this instance). Its position at theend of the agitating swing may be any desired angularfdstance (e. g.`beyond the mean or central positioniof the dipper in its agitatingswing. Infsaid mean position, that part of the dipper most remote fromthe axis of swing, i. e. Athe common horizontal rotational axis ofsprocket 50 and disk -58, lies in the vertical plane passing throughsaid axis. ln the 'present instance such part .o'iy thefdipper is its'scooping lip |3|, the radial distance 'ofY which from the'axis Aofswing i's` only slightly less than that of the coaxial concave''cylindrical bottom surfaces 40, 4|., of the juice supply `tank 33.'Following completion of the" outward throw of crank V81, its succeedinginward' throw in .rotating through another 180, permits,":s'pringV |25to turn' sprocket 50 clockwise until the crank has returned to itsinnerdead-center point, `at. which point the dipper has been swung backthrough its mean position to its Apredetermined limit A*of swing (e. g.30) therebeyond. Byfthe continuous revolution of shaft 84, thisalternating to-and-fro vagitating movement of the dippernis made tooccur at any desired rate which depends, ofcourse, upon the speed atwhich shaft Mis driven. A speed of 18 R. P.l M. for shaft 84istypicallyxgood practice. The direction of rotation of this shaft asviewed in Figs. 1 and 5, is assumed Ito be clockwise in thisillustrative embodiment of the invention, as already noted. The sp'eedat which shaft |'0I is rotated should be relatively slower, in order toavoid loss of any ofthe measured amount of liquid from the dipper as it,is being elevated in the dispensing cycle, and to 'ensure completeemptying of the dipper through its hollow stem during the -period whenthe dipperris Vata levelhigher than its center of swing. In the presentexample, the diameter olfffgea-r IIJ2fis twice that of gear 89, so thatshaft iflfgrevolves 'one-half as fast as shaft 84. y

. ,During operation `of the machine in strictly agita-ting phaseorcycle, the dispensing'shaft I0| remains at rest, with its crank I6 insuch angullar position that connection of its crank pin |30 tn chain |25'by chain |29 does not interfere with orf-otherwise affect in any waythe above described reciprocating movement of chain |25 produced by theYconjoint action of crank 81 and spring- 1|,28.I`his requirement is metbyA so setting crank |15 on shaft |0| that, when follower |05 rests indepression I4 ci the cam track, crank pin |30 is :closest to sprocket50; which may be called the normal or inactive position of thedispensing crank. Obviously, the effective length ofjch-ain |32 orvother resilient member may be lconnected to an intermediate point ofchain |29 and anchored to spring |26 as indicated at |133, to hold the-slack of chain |29 clear of chain |25.

The throw of crank )IIfB is greater 'than 'that of crank '811 by anamount such that, when the mechanism perfor-ms a `dispensing cycle, disLpensing crank |'6 will take over actuation -of the clipper device at yasuitable point in the normal or fagitating swing of the dipper; and,from'that point on, will cause the clipper eventually to travel beyondone -lim'it of its normal 0r =agitating 'swing and rise, Vatprogressively diminishing speed, to a predetermined maximum height-above its axis of swing and discharge its measured content of liquidthrough its hollow stem. In the specific illustrative embodiment of theinvention herein described by way of example, the dipper attains amaximum elevation, at `the extreme'foutward throw of the dispensingcrank, such that it then n I has an effective-liquid discharge angle orslope in Vthe neighborhood of 20 degrees vto the horizontal. Accordinglythe dipper will be in -liquiddischarging position, i. e. higher than itsa'xis of swing, long enough to ensure adequately complete emptying anddrainage of the measured juice 'from Athe dipp'e'r to the point ofY*ultimate delivery; especially 'so b'ec'ause lof 'the virtual vdwellcharacterizing its simple harmonic motion while it is higher than itsaxis of swing.

It will be notedthat, in'the construction illustrated, the mountingplate 2'4 is -apertured at |34 to vaccommodate the forward vend of th'egear box or case 83, thefou'ter frontwall of which is flush'wi'th 'saidmounting plate'and is suitably held in position as by mounting straps|35 'fastened both to the plate and-to the frame 'of the gear case lbycap screws |3521. `At the rear, the gear box iis 'sirx'iilarly securedby cap screws |36 to verticalv supporting plate |131 which has anintegral base flange anchored to the floor of the cabinet asindicated at|38.

The front upanel of the cabinet is removable, by turning'out `screws |39which hold `it in place, for inspection and adjustment of the operatingparts housed in thefo'rward compartment between said panel, and mountingplate 24. An opening closed by removable cover Y|40 is provided in theend wall adjacentl the motor and gear box for ready access to theseparts. It is to `be understood thatsuitable means (not shown) may beprovided for Vpreventing unauthorized access to the interior of thecabinet in any manner. whether by removal of the removable cabinetportions mentioned, or otherwise.

The operation of the apparatus here shown will-be readily understoodfrom the foregoing description, but will be briefly summarized, asfollows: Assuming the Vsupply tank 33 to be lled with orange juice, Yforexample, and themotor 80, as well as `the 'motor -of the refrigeratingunit 23, to 1`be-connectedto 'a suitable electric .-power line, andfurther assuming the 4transmission mechanism to be in the positionillustrated in Fig. 4, the dispensing cycle is nearly concluded andfollower |05 is about to drop into cam de-y I3v pression ||4 and rendershaft |0| idle. The continuous rotation of shaft 84 thereupon causesdipper 43, which is in its depending or lowered position, to resume itsback-and-forth swinging movement through a limited angular distance oneither side of the vertical, whereby to maintain the juice in the supplytank continuously agitated. Crank pin |30 being at the extreme inwardend of its throw, that is, the minimum possible distance from sprocket50, chain |29 is now loose, while the entire length of chain |25 isconstantly taut and therefore reciprocated by rotation of crank 81against the resisting tension of spring |26. When it is desired todispense a measured portion of the juice, lever handle 9 is depressed toshift cam |03 into starting position, thereby causing engagement of thetransmission clutch and rotation of shaft IDI and cam disk |03 throughone dispensing cycle as previously described. Due to the relativeproportioning of the respective throws of cranks 6 and 81, and of thelengths of the respective chain sections described, the continuousrotation of agitatingr crank 81 ceases to have any effect upon orcontrol over the movements of the dipper shortly after commencement ofthe dispensing cycle, because the angular movement of crank ||6thereupon causes chain section |29, and that section of chain |25between point |23 and the spring |26, to be tensioned directly by crankH6, the reg maining loose section of chain |25 remaining idle during thedispensing cycle despite the uninterrupted rotation of crank 81. Theoscillatory movement ofthe dipper is thus discontinued at apredetermined angular position of crank H6. Bythe further action ofcrank H6, the dipper isvfirst raised to its position of maximumelevation as Yshown in Fig. l, wherein it discharges its measuredcontent of juice through the dipper stem 44-44a and removable angulardischarge nozzle 441) downwardly through stationary delivery funnel |4|into a paper cup or the like |42 standing on shelf |43. Then, as crank||6 passes its point of maximum outward throw and returns to its normalposition of rest, the action of spring |26 rotates sprocket 50 'and'.mounting disk 58 clockwise until the dipper is again in its lowermostposition and, from then on is again continuously oscillated back andforth by the resumed action vof crank 81, the agitation phase being thusre-established.

All parts of the apparatus coming in contact with the beverage to bedispensed should most desirably be made of stainless steel or othermaterial suitably resistant to corrosion or discoloration. Such partsinclude, for example, the bevery in the supply tank, it may also, at alltimes when a dispensing or vending cycle is being performed, measure outand dispense approximately the same amount of liquid from said tank,whether the` level of the liquid in the tank is relatively high orrelatively low. The specific form of clipper 43 here illustrated hasimportant practical advantagesin this connection. As shown, itrcomprises a receptacle that is generally rectangular in plan` and openon the side that is uppermost in dispensing position of the dipper. Atapered tubular adapter or funnel connection |44 unites the i4 dipperwith its hollow stem 44. Viewed in 'side elevation, the dipper is seento consist of two angularly disposed sections, one of which has its sidewalls |45 and bottom |46 extending parallel with the axis of dipper stem44; while the side walls |41 and bottom |148 of the other sectionsextend at right angles thereto. open at its outer end, thus constitutingin effect a scoop whose lip 3| clears the curved bottom of dipper troughor well 4| by a relatively 'small' Further-r the agitation produced bythe rest of `thedippe'r structure, is especially eiective in preventingsettlement of suspended solids and in helping to maintain the entirebody of liquid in the supply tank turbulent to the extent desired.

Moreover, even Athough the level of the liquid in the supply tank may berelatively low,- the :deg`

scribed dipper construction and its mode of operation are such as toensure that, in a dispensing or vending cycle, more liquid will 'bescooped up and momentarily carried above the liquid level by the dipperthan thepredetermined quantity,-

In order that this predetermined desired quantity may be auto which itis desired to dispense.

matically measured out with reasonable accuracy in each dispensingvoperation of the dipper, the.

freeedge of, each side wall |45 of the dipper section nearest the hollowdipperstem is provided with an overflow notch |49, which is mostdesirably located substantially at the junction of said wall with wall|41 of the scoop section. After the ascending dipper emerges from thebody of liquid inrthe tank, and before the dipper stem 44 has attained ahorizontal position, excess liquid spills out through the overow notches|49, the.

thus measured remainder being thereafter dispensed when the dipper, inits further ascent, has

attained the necessary elevation.

Irrthe particularembodiment of the invention shown in the drawings andhereinabove described in detail by way of illustrative example, the webof gear 89, constituting the driven-member of the clutch transmissionfor actuating the dispensing or vending shaft ||l| has a plurality ofapertures adapted to be entered by the clutch pin of the driving member;in this way providing vfor more rapid response to depression of thevending cycle starting lever I9 than would usually be realized if therewere only one such aperture. arrangement is entirely satisfactory wherethe dipper and dipper sump are of such ample size that, even when theliquid level in the supply tank approaches the operative minimum, thedipper will fill suiiiciently regardless of the posi-` tion within itsagitating arc of swing from which it starts its vending cycle movement.However, where space is a critical factor necessitating use of a smallerdipper and dipper sump, it is of advantage to provide against thedippershaving.

to commence to move in dispensing cycle at a point'within its agitatingarc too close to that endA ofsaid arc which is nearest the point ofdispensing delivery. To this end, the arrangement may be such, forexample, `that the dipper can start; to move in dispensing cycle onlyfrom substantial-v lythat end of its agitatingarc which is farthest,

The latter section is Such an 15,. from the point of dispensingdelivery. This maybe accomplished by providing only a single aperture 90in the web of gear 89 for clutch pin 94 to enter; and by so adjustingthe angular setting of gear 89 on shaft 84 that the clutch pin can entersaid aperture only at an instant when the crankl has just completed itsinward throw relati-ve to sprocket D. Obviously, thestart of thedispensing movement of the dipper` can befixed at any other selectedpoint within its agitating arc of swing by suitably varying thedescribed timing adjustment.

What is claimediis:

1. Liquid dispensing apparatus comprising, in combination, a liquidsupply container, a dipper device mounted to swing therewithin about asubstantially horizontal axis, a source of power, driving means,including variable transmission mechanism, connecting said source ofpower with said dipper device, adapted and arranged normally toosoillate the same continuously through a limited arc ofswing, normallyidle means operable in a dispensing cycle to varysaid transmissionmechanism and thereby cause the dipper device to swing beyond said arcand upwardly into dispensing position higher than said axis and then toreturn to said limited arc of swing, and means to actuate said normallyidle means.

v2.Liquid dispensing apparatus as defined in claim 1, wherein saidtransmission mechanism comprises aicontinuously driven shaft forproducingv the oscillatory movement of said dipper device,za normallyidle shaft for producing the dispensing movement, means includingengageable lclutch members for connecting the two shafts, :and means foreffecting engagement of saidclutch members.

n.3.zlsi'quid dispensing apparatus as defined in claim V1, wherein said`transmission mechanism comprises a continuously driven shaft forproducing Athe oscillatory movement of said dipper device, a normallyidle shaft for producing the dispensing movement, means includingengageable clutch members for connecting the two shafts, and cam meansrotatable with the normally idle shaft and operable to effect engagementand disengagement of said clutch members.

4. Liquid dispensing apparatus as dened in claim l, wherein saidtransmission mechanism comprises a continuously driven shaft forproducing'the oscillatory movement of said dipper device, a normallyidle shaft for producing the dispensingmovement, means includingengageable clutch members for connecting the two shaftsgand cam meansrotatable with the normally idle shaft and operable to effect engagementand disengagement of said clutch members, the active cam surface beingso formed as to maintain the clutch members engaged except during asmallV part of one revolution of the normally idle shaft.

,.5. Liquid dispensing apparatus comprising a liquid supply container, adipper device including a dipper having a hollow stem, means mountingsaid dipper device for swinging movement about a horizontal axis, withthe dipper and an adjacent'poition of .said-stem .normally dependinginto said container, means continuously urging thel dipper toward onelimit of normal swing, power means operable continuously to move thedipper periodically toward the other limit of Ynormal swing against theopposition of the rst means, andffuither means, connectable at will tosaid power mears `wherery, for a cycle yof vpredetermined dzu'aticn,said power means is operable to 16 swing vsaid dipper beyond said otherlimit 'and into liquid-dispensing position.

6. Liquid dispensing apparatus comprising a liquid supply reservoir, adipper device includingV a dipper having a hollow stem, a mountingmember supported for rotational movement about ahorizontal axis, meanssecuring said dipper device to said mounting member with the dipper and.an adjacent portion of said stem depending into said reservoir, adriving sprocket secured to said mounting member, a chain trained aroundsaid sprocket and secured at one end to a tension spring whichconstantly exerts a pull thereon, a

motor, a crank shaft arranged to be continuouslyl driven by said motor,ga crank on said shaft to which the chain is connected, the rotation ofsaid crank normally causing, in conjunction with said spring,oscillatory movement of said sprocket and said dipper device through alimited angle.; a vnormally Aidle shaft, a crank thereon to which saidchain is also connected and which has a'` 7. Liquid dispensing apparatus:as set forth in; claim `6, which includes speed reduction gearing;

between Vsaid shafts, whereby said normally idle shaft when driven,revolves more slcwlythan the continuously driven shaft.

vS. Liquid dispensing apparatus as defined .in claim 1, wherein saidtransmission mechanism comprises a continuously driven shaft forproducing the oscillatory movement of said dipperv device, a normallyidle shaft for producing the dispensing movement, means includingengageable clutch members for connecting the two shafts, cam meansrotatable with the normally idle shaft and operable to effect engagementand disengagement of said clutch members, vand means for rotating saidcam andthe idle shaft from clutch disengagingA position into clutchengaging position yand thereby` initiating a dispensing cycle.

9. Liquid dispensing apparatus as defined in claim 1, wherein saidtransmission mechanism comprises a continuously driven shaft forproducing the oscillatory movement of said dipper` device, a normallyidle shaft for producing the dispensing movement, means includingengageable clutch members for connecting the two shafts, cam meansrotatable with the normally idle shaft and operable to effect engagementand disengagement of said clutch members, vthe ac tive cam surface beingso formed as to maintain the clutch members engaged except during asmall part of one revolution of the normally idle shaft, and means forrotating said cam and the idle Ashaft from clutch disengaging positioninto clutch engaging position and thereby initiating 'a dispensingcycle.

110. LiquidaV dispensing apparatus comprising, in combination, a liquidsupply reservoir, a mounting member mounted for rotational movementabout a horizontal axis and provided with an aperture located at adistance from said axis, a

dipper having a stemv with a portion remote from the dipper bent atright angles and pivotally seating in said aperture, arcuate attachingmembers, one secured to said mounting member and another to the dipperstem intermediate the dipper and such pivotally seating bent portion andconcentric therewith, said arcuate members being formed for slidinginterengagement or disengagement upon appropriate pivoting movement ofthe dipper and, when interengaged, anchoring the dipper structureto saidmounting member.

l1. Liquid dispensing apparatus as set forth in claim 6,'.wherein saidclutch means comprises a pin-carrying member securedto the-continuouslydriven shaft and longitudinallymovable thereon, a gear loose on saidshaft and apertured to receive the clutch pin, resilient means tendingto maintain the pin-carrying member disengaged from said gear, a gearfast with said normally idle shaft and meshing with the first mentionedgear, a clutch-shifting lever .slidably attached to both shafts andadapted, when suitably actuated, to move said pin-carrying memberagainst the opposition of said resilient means into clutching engagementwith the loose gear, a cam member fast with said normally idle shaft andhaving a circular cam track, a roller cam follower trunnioned on saidclutch-shifting lever intermediate the ends thereof and bearing againstsaid cam track, resilient means restraining movement, away from said cammember, of that end of said lever which is secured to the normally idleshaft, said cam track having a depression of such depth that, when saidcam member is in such angular position that said follower rests in saiddepression, the clutch parts are disengaged, while at all other angularpositions of the cam member, the clutch parts are engaged; and means forturning said cam member in the proper angular direction to cause saidfollower to ride up out of said depres-f sion and effect clutchengagement for a period corresponding to the remainder of a singlerevolution of the normally idle shaft.

12. Liquid dispensing apparatus as set forth in claim 11, wherein saidcam track is provided with a, shallow depression of slight angularextent, closely adjacent the first mentioned relatively deep depression,into which the cam follower drops upon riding up out of the deeperdepression; said shallow depression maintaining the cam follower stillsufficiently high to ensure clutch engagement, but serving to preventdrifting movement of the cam in event of temporary non-alignment of theengaging clutch parts.

13. Liquid dispensing apparatus comprising, in combination, a liquidsupply container, a dipper device mounted on a transverse axis locateddirectly above said container so as to depend thereinto, power means, afirst normally continuously operating means connected between said powermeans and said dipper device to continuously oscillate the latterthrough a limited arc passing through a transverse Vertical planeextending through said axis, the extent of oscillation being sufficientto agitate liquid in said container but not sufficient to move saiddevice above a horizontal plane extending through said axis, a secondnormally idle means connectable between said power means and said dipperdevice to take over operation of said dipper from said first means andto swing the dipper beyond one end of its normal arc into dispensingposition above said horizontal plane whereby a dispensing cycle isperformed and then return it for continued normal operation by saidfirst means, and actuating means 18 operable to' connect said' secondnormally idle means to said power means for performance of one suchdispensing cycle. f

14. Liquid dispensing apparatus comprising-in combination, a liquidsupply container, a dipper device mounted on a substantially horizontalaxis directly above said container to swing therewithin, said dipperdevice including a dipper having a unitary hollow stem rigid therewithwhich comprises a portion, remote -from'the dipper, extendingsubstantially at' right angles tothe portion adjacent the dipper, thesaid horizontal axis being parallel to but spaced from said remoteportion of the stem, said dipper passing close to the container bottomat thelowest point of its swing, and means for continuously swingingsaid dipper about said axis `to an extent suiiicient to agitate liquidin said container and means manually/'initiated at will for elevatingsaid dipper sufficiently to discharge its content of liquid through saidhollow stem toa point of delivery outside said container. v'

l5. Liquid dispensing apparatus comprising in combination, a liquidsupply reservoir having a bottom and vertical side walls, said bottombeing formed with a well adjacent one of said side walls, a mountingmember supported for rotational movement about a horizontal axis, adipper member having 4a hollow unitary stem rigid therewith and having ahorizontal right angle portion at a substantial distance from thedipper, means securing the dipper stem to said mounting member with thehorizontal portion extending therethrough and with the dipper normallydepending into the reservoir well, the horizontal portion of its stemextending away from said reservoir substantially parallel to saidhorizontal axis but at a distance therefrom.

16. In a liquid dispensing apparatus having a cooling chamber with anapertured heat insulating vertical wall and a liquid supply reservoirtherein, a circular diskl of heat insulating material substantiallyclosing the aperture and supported for rotational movement by meanswholly outside said chamber, a dipper device mounted upon said disk toswing with the rotational movement thereof and normally depending intosaid reservoir, and driving means for normally imparting continuousoscillatory rotational movement to said disk between limits suitable toeffect agitation of liquid in the reservoir -by said dipper device, butalso operable at will through a cycle of predetermined duration toextend rotational movement of said disk beyond one of said limitssufficiently to swing said dipper device into liquid dispensingposition.

17. In a liquid dispensing apparatus having a cooling chamber with anapertured heat insulating vertical wall and a liquid sup-ply reservoir,a circular disk of heat insulating material substantially closing theaperture and supported for rotational movement by means wholly outsidesaid chamber, a dipper member having a hollow unitary stem with a rightangle portion formed by a rectangular bend at a substantial distancefrom the dipper, means securing the dipper stem to said disk to swingwith the rotational movement thereof, with the dipper normally dependinginto said reservoir, and with the right angle portion of its stem beyondsaid bend extending outwardly through an aperture in said disk to aplace of liquid delivery, and driving means for normally impartingcontinuous oscillatory movement to said disk between iimits suitable toeffect agitation of liquid inthe reservoir by said dipper member, butalso operable at will through a cycle of predetermined duration toextend rotational movement of said disk beyond one of said limitssufficiently to swing said dipper high enough to discharge liquidthrough its hollow stem to said place of delivery.

18. Liquid dispensing apparatus comprising, in combination, a, liquidsupply reservoir, a dipper device including a dipper member and a hollowstem secured thereto, means mounting said dipper device for swingingmovement within said reservoir about a horizontal axis and through anarc of suicient extent to include a dipper position higher than saidaxis for discharge of liquid from said dipper member into and throughsaid hollow stem to a place of delivery; said dipper member comprisingangularly disposed sections one having side walls and a bottom parallelwith the axis of the stem `and the other having side walls and a bottom`continuous with and at-right angles to the first section, at least oneside wall of said first section being formed with an overow notch.

19. Liquid dispensing: apparatus as set forth inA claim 18, wherein atleast one overflow notch in the side walls off saidy dipper is locatedadjacent the junction of thev angularly related portions thereof, to aidin more accurately predetermining the quantity of liquid measured ,outand dispensed by the dipper device.

ROBERT R. HULL.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES. PATENTS Number Name Date 1,513,413 Moron Cct. 28,v 19241,863,250.YV Morse et al June 14, 1932 1,929,243 Harper Oct. 3, 19332,341,145 Kirkpatrick Feb. 8, 1944 2,378,430 Polsen et al. i June 19,1945

